Ok, I've not figured out how to put the pics on one side, & the writing next to it, but this will do for now.

Below you can see my newly modified gearbox cover with it's vents & a paint job.  It was vented before, but I've opened up those holes even more, & you can definately feel the difference with warm air blowing out the back when it's stationary, even.  The middle & front vents do, yes, Really Do, suck in the air, & so when travelling along the whole box is getting a whole load of air into it.

Is It Really Necessary???  Dunno for sure, but a heck of a lot of heat is generated in there, & I live in the hills & take the bike racing......plus the Continental Racers have 'em like this.  (bit of posing value)  Hehe.

 Bottom right is the old gear box cover.  I sanded off the old coating with wet & dry emery paper, & then painted it with "chrome paint"....I didn't really believe it's come out like a mirror as shown on the can, but it's a notch above ya boring ol' silver, I'd say.

If I were riding on dirt roads as I used to then I would cover the vents with tape.  I have done some dirt roads & found dust in with the variator rollers.

I replaced the old allen screw fasteners with good carbon steel hex head screws which are loctited in with medium strength thread lock.  Put stainless washers under them, too.   Bling!